Everything in moderation. When both the soul and body are aligned then we can feel peace throughout. Don't look after the one and neglect the other. Usually we spend so long working on our outer appearance or our body that we neglect the soul. Or we become uber spiritual and fail to fulfil the rights of our body.

"You say that you are just a body, but inside of you is something greater than the Universe." Imam Shafi (rahimullah)